From e22176d81472af953ddaa54d12673da9d9d20a3f Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie
Date: Fri, 13 May 2022 17:32:52 -0700
Subject: Somewhat more useful default net names

---
 lace.rb | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/lace.rb b/lace.rb
index 1d7f2f9..a9b0f36 100644
--- a/lace.rb
+++ b/lace.rb
@@ -79,25 +79,25 @@ module Lace
     end
 
     def real_nets(refs)
-      n = 1
       nets = {}
       seen = Set.new
       @nets.each do | id, net |
         next if seen.member?(net.object_id)
         seen.add(net.object_id)
-        name = net.name
-        unless name
-          name = "$unnamed#{n}"
-          n += 1
-        end
-        raise "Multiple disconnected nets named #{name}" if nets.member?(name)
         nodes = []
+        parts = []
         refs.each do | ref, comp |
           comp.pins.each do | pin, pinnet |
-            nodes << {:ref => ref, :pin => pin} if definitive_net(pinnet).object_id == net.object_id
+            next unless definitive_net(pinnet).object_id == net.object_id
+            nodes << {:ref => ref, :pin => pin}
+            parts << "#{ref}$#{pin}"
           end
         end
-        nets[name] = nodes if nodes.size > 1
+        next unless nodes.size > 1
+        name = net.name
+        name = parts.sort.join("_") unless name
+        raise "Multiple disconnected nets named #{name}" if nets.member?(name)
+        nets[name] = nodes
       end
       return nets
     end
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